Headlight.



F. BUCHANAN.

HEADLIGHT.

APPLICATION FILED APR-24,1911.

Patented Feb. 13, 1917.

VE TOR.

WITNESSES:

FRANK BUCHANAN, F SYRACUSE, NEW YORK.

HEADLIGHT.

Specification of Letters Patent.

Patented Feb. 13, 1917.

Application filed April 24, 1811. Serial No. 622,877.

To aZZ whom it may concern:

Be it known that I, FRANK BUCHANAN, of Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Headlight, of which the following is a specification.

This invention relates to head lights and has for its object a particularly simple and ellicien t means for supporting the electrodes and lamp mechanism of the head light; and it consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing in which like characters designate corresponding parts in all. the views.

Figure 1 is a vertical sectional view of this head light, the back of the casing and parts carried thereby being shown in front elevation.

Fig. 2 is a sectional view on line AA Fig. 1.

1 is the casing of the head light which is usually cylindrical in form and provided with a back 2 of sheet metal. 3 and 4 are respectively the fixed and movable electrodes of the head light. 5 is a bracket supporting the fixed or upper electrode, said bracket being supported at its base by the back 2 of the case and being mounted on a block 6 secured to the inner face of the back in any suitable manner as by screws 7, the block 6 being usually formed of insulating material.

8 is a bracket also supported by the back 2 and being here shown as mounted on the block 6.

The bracket 8 supports the electromagnetic means forming part of the lamp mechanism, said means including windings 9 connected in series with the lighting circuit and an armature or core 10 0perated by the magnetic effect of the windings 9, the core 10 being pivoted to one end of a clutch device 11 cooperating with a rod 12 connected to the movable supporting means for the lower electrode 4. The rod 12 is preferably roughened by providing the same with circumferential corrugations usually formed by threading the rod; and the clutch device 11 is formed with an opening between its ends loosely fitting the rod 12. The screw threadsyor corrugations on the rod facilitate the gripping of the rod by the clutch device.

13 is an additional bracket supported by the back 2 and here shown as mounted on a block of insulation 1 1 secured to the inner face of the back 2, the bracket 13 comprising an elongated base arranged inclined with respect to the axis of the electrodes 3, l, the base being bent at its ends to form posts 15, 16, one post, as the post 15, being longer than the post 16, and the posts 15, 15 having laterally bent cars 17, 18 at their ends which carry pivot pins 19 and 20 extending parallel to each other.

21 is a pivoted member forming part of the lamp mechanism and having a bearin mounted on the pin 19 and abutting against the ear 17 at the end of the longer post 15, and said member having a long arm at the outer end of the bearing and a short arm 23 at the inner end thereof, the long arm carrying clamping means 24 for gripping the lower or movable electrode 4 and the short arm terminating between the pivot pins 19, 20.

25 is a pivoted member forming part of the lamp mechanism and having a bearing 26 on the pivot pin 20 carried by the shorter post 16 of the bracket 13, said member having arms of unequal length extending in opposite directions, the longer arm being weighted at 27 and connected to the rod 12 and the shorter arm 28 being extended toward the arm 23 of the other pivoted member and being connected thereto.

As here shown the shorter arms 23, 28

of the pivoted members 21, 25 are arranged in the same vertical plane, and the opposing ends of said arms lap each other, are spaced apart, and connected by a link 29 pivoted respectively at 30 and 31 to the arms 23 and28. Said link 29 is preferably arranged with its lengthwise axis extending at an angle, approximating a right angle, to the radii of the arms 23 and 28 and extends between branches or bifurcations at the ends of said arms, Fig. 2.

Owing to the link connection between the arms 23, 28 of the pivoted members, the leverage between said members does not change substantially during the movement of said members on their pivots. and owing to the mounting of the pivoted members on the pivot pins carried by posts of unequal length, the pivoted members can be arranged close together, in compact form.

The bracket 5 carrying the upper electrode 3 is connected to a conductor 32 which is connected to a binding device 33 carried by a block 34 mounted on the back 2 of the casing, the binding device 3-3 coacting with a conductor 35 which is also provided with a second binding device connected to the feed wire 36.

The lower electrode 1 is connected to a binding device 37, carried by a block 38 mounted on the back 2 of the casing, said binding device 37 being mounted on a conductor carrying a second binding device 39 which is connected by a conductor 40 to the windings 9 of the elcctromagnet, and the electromagnet is grounded to the case by a conductor 11.

What I claim is:

1. In a head light, the combination of a casing having a back, a bracket within the casing supported by the back and comprising a base and posts 01" different lengths at the ends of the base, pivot pins carried respectively by the posts and extending parallel to each other, fixed and movable electrodes within the casing, lamp mechanism for supporting and feeding the movable electrode, said mechanism including a pivoted member having a bearing mounted on the pivot pin carried by the longer post, the bearing abutting against the end of the longer post, and said pivoted member also including arms projecting in the same general direction from the opposite ends of the bearing, the arm at the outer end being longer than that at the inner end and serving to support the movable electrode, and the arm at the inner end of the bearing terminating between said pivot pins, and a pivoted member having a bearing mounted on the pivot pin carried by the shorter post and abutting against the shorter post and having an arm projecting toward the shorter arm of the first-mentioned pivoted member,

and means connecting said arms, substantially as and for the purpose set forth.

2. In a head light, the combination of a casing having a back, a bracket within the casing supported by the back and comprising a base and posts of different lengths at the ends of the base, pivot pins carried respectively by the posts and extending parallel to each other, fixed and movable electrodes within the casing, and lamp mechanism for supporting and feeding the mov-- able electrode, said mechanism including a pivoted member havin a bearing mounted on the pivot pin carried by the longer post, the bearing abutting against the end 01 the longer post, and said pivoted member also including arms projecting in the same general direction from the opposite ends of the bearing, the arm at the onte' longer than that at the inner end and serving to support the movable electrode, and the arm at the inner end of the bearing terminating between said pivot pins, and a pivoted member having a bearing mounted on the pivot pin carried by the shorter post and abutting against the shorter post, and having an arm projecting toward the shorter arm of the first-mentioned pivoted r ember,

and a link pivoted at its ends to the lastmentioned arms, substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name in the presence of two at testing witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 20th day of March, 1911.

FRANK BUGHANAN.

Witnesses:

C. O. Sorionnnon, Lrnronn J. WnLLs.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatencs, Washington, D. 6.

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